Sort threads by name is incorrect

1. Take a heap dump file
2. Open heap dump file
3. Switch the main panel to "Threads"
4. Click the table column "Name"
5. But the Thread name is not sort by name!

Screenshots

Desktop (please complete the following information):

• OS: MacOS
• JDK version [JDK 1.8.0_181]
• Version 2.1.7